Modesto, CA


Modesto, CA

The City of Modesto is home to an estimated 214,221 residents, and it’s located in Stanislaus County, CA.

This report will help you become better acquainted with Modesto and the surrounding area by addressing the following questions:

  • Are there any hazardous sites in Stanislaus County, CA?
  • How clean is the air in Stanislaus County, CA?
  • What’s the average radon level for homes in Stanislaus County, CA?
  • Is the water in Stanislaus County, CA safe to drink?

Hazardous Sites near Modesto, CA

There are three Superfund sites in Stanislaus County, CA. Superfund sites, like Riverbank Army Ammunition Plant in Riverbank, CA, are areas that have been contaminated with hazardous substances. If not for the cleanup efforts orchestrated by the EPA, these sites could endanger people living in nearby communities.

The EPA uses the Hazardous Ranking System (HRS) to quantify the risk a contaminated site poses to human health and the environment. Sites assigned HRS scores of 28.5 or greater qualify for placement on the National Priorities List (NPL), and are eligible to receive federal funding for cleanup efforts.

Before the EPA deletes a site from the NPL, it conducts reviews to ensure the cleanup was sufficient. As a result, some sites remain on the active site list long after cleanup activities are complete.

For more information about the Superfund sites located in the Modesto, CA area, be sure to review the map and background information provided below:


Map Legend:

06099

A. Riverbank Army Ammunition Plant (HRS Score: 64)

The Riverbank Army Ammunition Plant site is located in Riverbank, CA.

The EPA found dangerous levels of Chromium, and Cyanide at the Riverbank Army Ammunition Plant site.

06099

B. Valley Wood Preserving, Inc. (HRS Score: 32)

The Valley Wood Preserving, Inc. site, a former wood preservation facility, is located in Turlock, CA.

Contaminants found at the Valley Wood Preserving, Inc. site include:

  • Arsenic
  • Chromium
  • Manganese
  • Sulfur
  • Copper
06099

C. Modesto Ground Water Contamination (HRS Score: 29)

The Modesto Ground Water Contamination site, caused by a dry cleaning facility that contaminated soil and groundwater in the area, is located in Modesto, CA.

The EPA found dangerous levels of Toluene, and Tetrachloroethene at the Modesto Ground Water Contamination site.

Air Quality in the Modesto, CA Area

The two most widespread forms of air pollution are ozone (smog) and particle pollution (soot). Exposure to these harmful pollutants, for even just a short period, can have adverse effects on your health.

Thanks to data collected by air monitoring equipment located across the country, the American Lung Association (ALA) is able to assess and track our air quality using three metrics:

  • Ozone
  • Short-term Particle Pollution
  • Year-round Particle Pollution

In their 2019 annual report, the ALA rated the air quality in Stanislaus County, CA as follows:

Ground-Level
Ozone Pollution

Grading Scale: A-F

Short-Term
Particle Pollution

Grading Scale: A-F

Year-Round
Particle Pollution

Grading Scale: Pass/Fail

Radon Levels in Modesto, CA Area

Air quality inside your home can be impacted by a number of factors, including the presence of hazardous substances in building materials (asbestos, lead, formaldehyde, etc.) and local radon levels.

Radon is a naturally occurring gas you cannot see or smell. It can build up inside your home and negatively impact your indoor air quality as well as your health.

To provide a guideline, the EPA assigned one of three zones to each U.S. county and county equivalent:

  • Zone 1 (higher radon levels)
  • Zone 2 (moderate levels)
  • Zone 3 (lower levels)

The average indoor radon reading in Stanislaus County, CA is predicted to be less than 2 picocuries per liter (pCi/L), so the county has been assigned EPA Radon Zone 3.

EPA Radon Zone

But, it's worth mentioning homes with elevated levels of radon have been found in all three radon zones. So, despite the fact Modesto, CA is in EPA Radon Zone 3, you should have a radon test performed on any home you purchase in the area.

Water Quality in Modesto, CA Area

In accordance with the Safe Drinking Water Act (SDWA), the EPA sets regulatory limits for drinking water contaminants known to cause adverse health effects.

The following Stanislaus County, CA water provider(s) violated the maximum allowable level for one or more regulated contaminants:

Filter ValueWater SystemContaminantHealth Effects
06099Buehner HousesArsenicSkin damage or problems with circulatory systems, and may have increased risk of getting cancer
06099Ceres West MHPArsenicSkin damage or problems with circulatory systems, and may have increased risk of getting cancer
06099Ceres, City OfCombined UraniumIncreased risk of cancer, kidney toxicity 
06099Ceres, City OfNitrateInfants below the age of six months who drink water containing nitrate in excess of the MCL could become seriously ill and, if untreated, may die. Symptoms include shortness of breath and blue-baby syndrome. 
06099City of Modesto - GraysonNitrateInfants below the age of six months who drink water containing nitrate in excess of the MCL could become seriously ill and, if untreated, may die. Symptoms include shortness of breath and blue-baby syndrome. 
06099Cobles Corner1,2-Dibromo-3-ChloropropaneReproductive difficulties; increased risk of cancer 
06099Cobles CornerArsenicSkin damage or problems with circulatory systems, and may have increased risk of getting cancer
06099Country Villa AptsArsenicSkin damage or problems with circulatory systems, and may have increased risk of getting cancer
06099Country Western Mobile Home ParkArsenicSkin damage or problems with circulatory systems, and may have increased risk of getting cancer
06099Hughson, City OfArsenicSkin damage or problems with circulatory systems, and may have increased risk of getting cancer
06099Keyes Community Services Dist.ArsenicSkin damage or problems with circulatory systems, and may have increased risk of getting cancer
06099Keyes Community Services Dist.Nitrate-NitriteInfants below the age of six months who drink water containing nitrate in excess of the MCL could become seriously ill and, if untreated, may die. Symptoms include shortness of breath and blue-baby syndrome.; Infants below the age of six months who drink water containing nitrite in excess of the MCL could become seriously ill and, if untreated, may die. Symptoms include shortness of breath and blue-baby syndrome.
06099Knights Ferry Comm. Svc. Dist.TTHMLiver, kidney, or central nervous system problems; increased risk of cancer 
06099Martin's Mobile Home CourtCombined UraniumIncreased risk of cancer, kidney toxicity 
06099Modesto, City OfCombined UraniumIncreased risk of cancer, kidney toxicity 
06099Modesto, City OfNitrateInfants below the age of six months who drink water containing nitrate in excess of the MCL could become seriously ill and, if untreated, may die. Symptoms include shortness of breath and blue-baby syndrome. 
06099Monterey Park Tract CsdArsenicSkin damage or problems with circulatory systems, and may have increased risk of getting cancer
06099Monterey Park Tract CsdNitrateInfants below the age of six months who drink water containing nitrate in excess of the MCL could become seriously ill and, if untreated, may die. Symptoms include shortness of breath and blue-baby syndrome. 
06099Patterson, City OfNitrateInfants below the age of six months who drink water containing nitrate in excess of the MCL could become seriously ill and, if untreated, may die. Symptoms include shortness of breath and blue-baby syndrome. 
06099Riverdale Park Tract CsdCombined UraniumIncreased risk of cancer, kidney toxicity 
06099Riverview Mobile Home EstatesCombined UraniumIncreased risk of cancer, kidney toxicity 
06099Turlock, City OfArsenicSkin damage or problems with circulatory systems, and may have increased risk of getting cancer
06099Western Hills Water District/Diablo GranTotal Haloacetic Acids (HAA5)Increased risk of cancer 
06099Western Hills Water District/Diablo GranTTHMLiver, kidney, or central nervous system problems; increased risk of cancer 

In addition to setting enforceable standards for harmful contaminants, the EPA also established guidelines to assist public water providers in managing the taste, odor and color of their drinking water.

To find out more about what’s in your drinking water, contact your utility company and request a copy of the latest Consumer Confidence Report.


Sources and Methods

Hazardous Sites: Identified using a report from the Environmental Protection Agency (EPA), hazardous sites detailed on trendingtowns.com represent sites contained on the National Priorities List (NPL) as of November 25, 2019.  The NPL is the list of national priorities among the known releases or threatened releases of hazardous substances, pollutants, or contaminants throughout the United States and its territories.  All site-related data was sourced from the EPA.

Air Quality: Grades for ozone, short-term particle pollution, and year-round particle pollution were obtained from State of the Air 2019, a report compiled by the American Lung Association.

Radon Zones: Radon zone designations were obtained using a public use dataset provided by the EPA (September 11, 2019).

Water Quality: Drinking water violation data was sourced from the Safe Drinking Water Information System (SDWIS), a public use database provided by the EPA.  The dataset included violations submitted to the database as of the third quarter of 2019.

Paul

I’ve moved several times over the years, so I know just how stressful it can be to relocate. I want to help put your mind at ease. That’s why I research and write about all the things I think you should consider when moving to a new town.

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